Here is a list of Pharaohs and the approximate value of their most expensive rare item currently. Based on this your best bet would be Ashmunrah, Dipthrah, or Morguthis. This may very over time and based on your server.
Source: Price Checker
hello, if you are looking to get more rare and expensive loot, you should consider between holy scarab, phoenix shield and holy falcon. Of those 3, the possibility of obtaining a holy scarab is even more rarer.
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